FIF tax is the rule that catches many NZ investors off guard when they start buying overseas shares or funds. Understanding it before you invest — rather than after — helps you structure your portfolio efficiently.
FIF rules apply when your overseas investments exceed $50,000 cost price. Under the default FDR method, you pay tax on 5% of your opening portfolio value each year, regardless of actual gains or dividends. NZ-domiciled PIE funds (such as InvestNow Foundation Series, Kernel, and Smart, formerly Smartshares) handle FIF internally, so their investors don't file FIF returns for those holdings.
What Is FIF?
FIF stands for Foreign Investment Fund. It’s an IRD tax regime that applies to New Zealand tax residents who directly hold overseas investments — primarily overseas shares, offshore managed funds, and foreign unit trusts.
The FIF rules exist because IRD wanted to prevent NZ residents from parking money in low-dividend overseas investments to defer or avoid tax indefinitely. Under FIF, you’re taxed on a deemed return each year, even if you received no cash.
The $50,000 Threshold
FIF rules only apply if the cost price of your overseas investments exceeds $50,000 at the start of a tax year.
- The threshold is per person, not per household
- It’s based on cost price (what you paid), not current market value
- Joint investments between partners may be split 50/50 if jointly owned
If your portfolio is below $50,000 cost price, you’re in the safe harbour: you simply pay tax on dividends received, same as a NZ bank deposit. No FIF return needed.
What counts toward the $50,000?
- Directly held overseas shares (US stocks bought on Hatch, Stake, Tiger Brokers, etc.)
- Directly held overseas ETFs (e.g. Vanguard ETFs bought on an overseas brokerage)
- Overseas managed funds held directly
- Foreign life insurance policies
What does NOT count toward the $50,000?
- NZ-domiciled PIE funds that invest overseas (InvestNow, Kernel, Smart — formerly Smartshares —, Simplicity) — the fund handles FIF internally
- KiwiSaver funds — handled by the provider
- Australian shares that qualify for the “Australian exemption” — the company must be ASX-listed, Australian tax resident, not treated as resident elsewhere under a tax treaty, and maintain a franking account (check IRD’s Australian share exemption tool; this is not simply “any S&P/ASX 200 constituent”)
- NZ shares
- NZ term deposits and bank accounts
The Two FIF Methods
If you exceed the $50,000 threshold, you must report FIF income. IRD allows two methods:
1. Fair Dividend Rate (FDR) — the default
You pay tax on 5% of the opening market value of your overseas investments at the start of each tax year.
Example: You hold $80,000 of overseas shares (at market value on 1 April 2025). FIF income = $80,000 × 5% = $4,000. You pay tax on $4,000 at your marginal rate — regardless of whether the shares went up, down, or paid any dividends.
- In a good year (shares up 20%), FDR is very favourable — you’re only taxed on 5%, not the actual gain
- In a bad year (shares down 15%), you still pay tax on 5% — which stings
- Dividends are not taxed separately under FDR — they’re considered part of the 5% deemed return
2. Comparative Value (CV) — the alternative
You pay tax on the actual increase in value (capital gain + dividends) during the year.
Example: Your portfolio opens at $80,000 and closes at $85,000, with $2,000 in dividends reinvested. FIF income = ($85,000 - $80,000) + $2,000 = $7,000.
- You can elect CV annually — you’re not locked in
- CV is better in a year where actual returns are below 5% (e.g. the market falls)
- CV is worse in a strong market year
- If CV produces a negative result (loss), FIF income is zero — you don’t get a deduction, but you pay no tax
Which method should you use?
IRD lets you calculate FIF income under both methods each year and use whichever is lower. Many investors (or their accountants) do this calculation annually. In most bull-market years, FDR wins. In down years, CV can eliminate the FIF tax bill entirely.
Why Most NZ Investors Avoid FIF Entirely
The simplest way to avoid FIF complexity is to invest through NZ-domiciled PIE funds. These are funds registered and managed in New Zealand that invest globally on your behalf.
Examples include:
- InvestNow Foundation Series (NZ-domiciled funds that invest into global ETFs, several of them Vanguard’s)
- Kernel’s global index funds (NZ-registered PIE funds)
- Smart ETFs (formerly Smartshares) listed on the NZX (NZ-domiciled)
- Simplicity funds (NZ-registered)
When you invest through these funds, the fund itself is the overseas investor, not you. The fund handles FIF reporting internally. You simply receive PIE income taxed at your PIR rate. No FIF return, no calculation, no complexity.
These funds give global exposure without a personal FIF calculation.
The trade-off
NZ-domiciled funds have slightly higher fees than buying Vanguard ETFs directly. You also lose access to some funds not available in NZ (e.g. specific sector ETFs).
FIF and Direct US Stock Investing
If you buy US shares directly (via Hatch, Stake, Tiger Brokers, or Interactive Brokers), those count toward your FIF threshold.
Below $50,000: pay tax on actual dividends received (withheld at 15% by the US under the NZ-US tax treaty — you may be able to claim a foreign tax credit).
Above $50,000: FIF applies. You need to file a FIF return with IRD. This is manageable with software like Sharesight but adds complexity to your tax year.
FIF and the IR3 Tax Return
If FIF applies to you, you must:
- Calculate your FIF income (FDR or CV method)
- Report it on your IR3 individual tax return
- Pay tax at your marginal rate (not PIR — FIF income is not PIE income)
IRD has a FIF calculator on their website for FDR calculations. Sharesight also generates FIF reports for a fee.
Summary
| Situation | FIF Applies? |
|---|---|
| Overseas shares < $50,000 cost price | ❌ No — tax on dividends only |
| Overseas shares ≥ $50,000 cost price | ✅ Yes — FDR or CV method |
| NZ PIE funds investing globally | ❌ No — fund handles FIF internally |
| KiwiSaver | ❌ No |
| ASX-listed shares meeting the Australian exemption (resident, franking account) | ❌ No — taxed on dividends |
| NZ shares | ❌ No |
Frequently Asked Questions
Does the $50,000 threshold reset if I sell shares? The threshold is based on the cost price of what you held at the start of the tax year (1 April). If you sell overseas shares before 1 April and your cost drops below $50,000, you won’t be in FIF that year.
My partner and I jointly hold $70,000 of US shares. Do we both have FIF? If jointly owned, split 50/50 — $35,000 each. Both are below $50,000, so FIF doesn’t apply to either of you. Note: each person’s other overseas investments still count toward their individual threshold.
I’m a high earner — should I still use NZ PIE funds? Yes, for most people. PIE funds cap your tax at 28% (vs 39% marginal rate for high earners) AND avoid FIF. Both benefits favour PIE funds.
What if I inherit overseas shares? The cost price is generally the market value at the date you inherited the shares. If that’s above $50,000, FIF applies from that point.
Does FIF apply to overseas property? No. Overseas real estate is not subject to FIF. Different rules apply to overseas rental income.